焊管
銲管
한관
WELDED PIPE AND TUBE
2014年
11期
64-67
,共4页
埋地悬空管道%塌陷%流失%有限元%应力
埋地懸空管道%塌陷%流失%有限元%應力
매지현공관도%탑함%류실%유한원%응력
buried suspended pipeline%collapse%loss%finite element%stress
埋地管道由于受到各种潜在地质灾害的威胁，可能导致管道下方土层塌陷或流失，使管道处于悬空状态，引起管道失效，给管道运行带来安全隐患，并伴随带来严重的经济损失和人员伤亡。本研究基于Winkler线性理论，建立管-土相互作用力学模型，应用ABAQUS有限元分析软件得到悬空管道上的应力分布，分析得出管道达到屈服阶段时管道的悬空长度。计算结果表明：该材质管道在悬空长度达到160 m时，接近于屈服阶段。
埋地管道由于受到各種潛在地質災害的威脅，可能導緻管道下方土層塌陷或流失，使管道處于懸空狀態，引起管道失效，給管道運行帶來安全隱患，併伴隨帶來嚴重的經濟損失和人員傷亡。本研究基于Winkler線性理論，建立管-土相互作用力學模型，應用ABAQUS有限元分析軟件得到懸空管道上的應力分佈，分析得齣管道達到屈服階段時管道的懸空長度。計算結果錶明：該材質管道在懸空長度達到160 m時，接近于屈服階段。
매지관도유우수도각충잠재지질재해적위협，가능도치관도하방토층탑함혹류실，사관도처우현공상태，인기관도실효，급관도운행대래안전은환，병반수대래엄중적경제손실화인원상망。본연구기우Winkler선성이론，건립관-토상호작용역학모형，응용ABAQUS유한원분석연건득도현공관도상적응력분포，분석득출관도체도굴복계단시관도적현공장도。계산결과표명：해재질관도재현공장도체도160 m시，접근우굴복계단。
The buried pipelines are threatened from various potential geological disasters, which may lead to earth collapse and soil loss under pipeline, thus to make the pipeline at suspended state, result in pipeline failure, bring the hidden safety problem into pipeline operation and causing severe economic losses and personnel casualty. In this article, based on Winkler linear theory, establishing mechanical model of pipe-soil interaction, using ABAQUS FEA software to achieve the stress distribution on suspended pipeline, obtained the pipeline suspended length in case of reaching yield stage. The calculation results indicated that this kind of pipeline is close to yield stage when the suspended pipeline length up to 160 m.
